Patent US29188A successfully refreshed from Google Patents.
Patent US2631118A successfully refreshed from Google Patents.
US2631118A
Expired / Lapsed
US
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Method of producing soft magnetic materials
Assignee: AT&T Inc
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Filing: 1949-12-21
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Granted: 1953-03-10
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Expires: 1969-12-21
Abstract
No abstract record available.
Inventors
- 👤 Otis L Boothby
- 👤 Jr Daniel H Wenny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:59
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/02; C22C1/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
THE METHOD OF PRODUCING A SOFT MAGNETIC METAL BODY WHICH COMPRISES MELTING THE INGREDIENTS OF THE COMPOSITION OF WHICH SAID BODY IS FORMED, MAINTAINING A SLAG, MADE REDUCING BY THE PRESENCE OF CARBON, OVER THE MELT THROUGHOUT SUBSTANTIALLY THE ENTIRE MELTING OPERATION, MAINTAINING THE MELT ESSENTIALLY FREE OF ELEMENTS WHICH ARE CAPABLE OF FORMING AN OXIDE WHICH IS STABLE AT THE TEMPERATURE OF THE MELT AND WHICH HAS A HEAT OF FORMATION GREATER THAN 90 KILOGRAMCALORIES PER GRAM ATOM OF OXYGEN ENTERING THE OXIDE, ADDING MANGANESE TO THE INGREDIENTS OF THE MELT AT SOME TIME DURING THE MELTING OPERATION IN AN AMOUNT SUFFICIENT TO PREVENT GASSING DURING THE SUBSEQUENT SOLIDIFICATION OF THE MELT,
Claim 2
Independent Claim
113 words
THE METHOD OF PRODUCING A SOFT MAGNETIC METAL BODY WHICH COMPRISES MELTING THE INGREDIENTS OF THE COMPOSITION OF WHICH SAID BODY IS FORMED, MAINTAINING A SLAG, MADE REDUCING BY THE PRESENCE OF CARBON, OVER THE MELT THROUGHOUT SUBSTANTIALLY THE ENTIRE MELTING OPERATION, MAINTAINING THE MELT ESSENTIALLY FREE OF ELEMENTS WHICH ARE CAPABLE OF FORMING AN OXIDE WHICH IS STABLE AT THE TEMPERATURE OF THE MELT AND WHICH HAS A HEAT OF FORMATION GREATER THAN 90 KILOGRAMCALORIES PER GRAM ATOM OF OXYGEN ENTERING THE OXIDE, ADDING MANGANESE TO THE INGREDIENTS OF THE MELT AT SOME TIME DURING THE MELTING OPERATION IN AN AMOUNT SUFFICIENT TO PREVENT GASSING DURING THE SUBSEQUENT SOLIDIFICATION OF THE MELT,
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |